Skeleton beam



J, KAHN SKELETON BEAM jan. 26, 19320 Filed NOV. l5, 1927 I MVN, mm1 En www i Grammi Fatented dan, 2, 1932 d'lUlL'US KAI-IN, OF YOUNGSTOWN, OHIO, ASSIGNOR TO TRUSCON STEEL COMPANY, 0F YOUNGSTOWN, OHIO, A CORPORATION F MICHIGAN SKFMETON BEAM Application led November 15, 1927. Serial No. EBAIG.

The present invention relates to skeleton beams, preferably of the type in which the elements are Welded together, and the object is to provide a structure that may be made of stock material that can be readily fabricated, and in which the Welded portions are peculiarly formed for Welding.

1n .the accompanying drawings:

Figure 1 is a. side elevation of an l-beam,

lo from which the chord members are preferably created,

Figure 2 is a sectional vievv on the line 2-2 ot Figure 1,

Figure 3 is a side elevation of the beam l5 when severed to produce the said chord members,

Figure l is a cross sectional View on the line lf-t of Figure 3,

Figure 5 is a side elevation of the bar from which the Web member is formed,

Figure 6 is a side elevation of the web member,

Figure 'Z is a side elevation of the completed skeleton beam, f

Figure 8 is a cross sectional view on the line 8-8 of Figure 7.

1n producing thebeam of the invention, a stock beam, preferably an 1beam, designated 9, is longitudinally severed as shown at 10, thereby producing chord members 11 With Web flanges 12 having inner eut or raw edges Web member is preferably formed from a bar 14 that may be crueiforrn, and this web member is bent into serpentine form, thereby producing angularly disposed lattice portions 15 joined by curved bight portions 16.

Two 'chord members 11 are arranged in spaced relation with their flanges 12 in op- 40 position, and the chord member is placed between them, with the outer edges of the bight 16 abutting against the cut or raw edges 13 of the flanges 12, the abutting portions being then Welded together, as indicated at 17, 4b producing the finished structure.

Aside from the simplicity of this structure and the ease with which it may be fabricated, it is to be noted that the edges 13, being cut, are free from scale. Moreover the bending of the bar 14 to produce the web member not only dislodges scale at the points of Welding contact and therefore producing better surfaces for Welding, but this bending stretches the iibres, thereby raising the elastic limit of the metal and offsetting to a large degree, if not entirely, the annealing eil'ect of the heat generated by the Welding operation. Y

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art, Without further description, and it will be understood that various changes inthe size, shape, proportion and minor details of construction may be resorted to Without departing from the spirit or sacrificing any of theV advantages of the invention.

4What I claim is 1. A skeleton beam comprising chord member bars, at least one of which has a continuous longitudinally disposed inset` stiiening ange on its inner side, and a, Web bar of substantially serpentine form bridging the space between the chord bars and having bights alternately welded to the inner sides of said respective chord bars, the bights engaged with the flanged chord bar contacting with and being Welded to the inner edge of the Bange of said bar and said flange being maintained at the Welds and spacing the web bar from the bodyof the chord bar and further eonstituting a continuous reenforcement for the said chord bar both at and between `the said Welds.

2. A skeleton beam comprising chord members consisting of bars having continuous longitudinally disposed inset stilening flanges on their inner opposing sides, and a web bar of substantially serpentine form bridging the space between the flanges of the chord members and having its bights of a thickness not greater than the thickness of the flanges, said bights contacting with and being welded to the inner edge faces of the flanges, said flanges being maintained at the welds and spacing the web bar from the body of each chord member 'and further constituting continuous stifening reinforcements for the chord bars both at and between the said welds. c

4. A skeleton beam comprising chord members Iconsisting of bars having body portions provided with continuous longitudinally disposed inset stiifening flanges on their inner opposing sides, and a flanged web bar of substantially serpentine form bridgingthe space between flanges of the chord mem- A bers and having the bights of certain of its flanges respectively contacting with and welded to the inner edge faces of the flanges of the chord members, said anges being maintained at the welds and spacing the web bar from the bodies' of the chord bars and said flanges furthermore constituting continuous stiening reinforcements for the chord bars, both at the welds and between the said welds.

are spaced apart, forming chord bars with bodies having continuous longitudinally disposed inset flanges facing each other, and a web member of substantially serpentine form and having its bights contacting with and welded to the raw edges of the flanges, said flanges of the chord members being maintained at the welds and spacing the Web bar from the bodies of the chord members and further constituting continuous stiden- Aing reinforcements for the chord bars, both at the welds and between the said welds.

In testimony whereof, I affix my signature.

J ULIUS KAI-IN.

5. A skeleton beam comprising chord l members consisting of bars having body portions provided with continuous longitudi- .-nally disposed inset stiifening flanges on their inner opposing sides, and a web bar'of substantially serpentine form and substantially cruciform in cross section bridging the space between flanges of the chord members and having the bights of two of its opposite flanges of a thickness not greater than the thickness of the flanges of the chord members, the bights of said opposite flanges respectively and alternately contacting with and being welded to the inner edge faces of the flanges of the chord members, said chord flanges being maintained at the welds and l spacing the web bar from the bodies of thev dchord members and furthermore constituting continuous stiffening reinforcements for the chord bars both at the welds and between the same.

6. A skeleton beam comprising longitudinally severed sections of anged beams that 

